Clear-vision window.



G. C. KERR.

CLEAR VISION WINDOW.

APPLICATION FILED MAR. 15. 1912.

LMAMD I PatentedA r.22,1919.

46 firrfrztor irnn s ra rns PATENT QWICEQ "GEORGE o. KERR, or nnamnnn, MINNESOTA, ASSIGNOB. or ONE-THIRD T HENRY I. COHEN AND ONE-THIRD ro w. H. GEMMELL, BGTH or BRAINERD, MINNESOTA.

CLEAR-VISION WINDOW.

To all whom it may concern.-

. Be it known that I, GEORGE C. KERR, a citizen of the United States, residing at Brainerd, in the county of Crow Wing, and State of Minnesota, have invented certain new and useful Improvements in Clear- Vision Windows, of which the following is aspecific'ation.

My invention relates to clear vision windows to be employed in connection with 1ocomotives, street-cars, limousines or in any other place Where the window is subjected to storm conditions and clear vision through the same is essential. As exemplified in the present application, I employ such a window in connection with a cab door of a 10- comotive; The objects of my invention are carried out by providing a swinging or rotating sash capable of being turned to bring either side in for'convenient cleaning, together with means for rendering a stormtight closure between the sash and its frame. Means are also provided for holding the sash locked from movement in any of its closed or open positions.

The full objects and advantages of my invention will appear in connection with the detailed description thereof and are particularly pointed out in the claims.

In the drawings, illustrating the application of my invention in one form,-

Figure 1 is av front elevational view of a portlon of a locomotive cab and door showing the application of my invention thereto. ig. 2 is a vertical sectional view taken on line,22 of Fig. 1 and drawn to a larger scale. Fig. 3 is a view similar to Fig. 2, taken on line 33 of Fig.1. Fig. 4 is a perspectiv view of the door shown in Fig. 1,

with the sash partly swung.

Where a window is exposed to storm conditions, as in locomotives, great difficultyhas been found in cold weather in keeping the front observation window free from snow and frost to enable the engineer or fireman to have a clear vision ahead of him. The usual method has been to open the side window and look ahead through that, at the same time trying to clean the exposed side of the front observation window. 'lhis Specification of letters Patent. Pwhgnteoi App, 22, 191% j i 1 Application filed mach 15,1917. Serial No. 154,993.

cab 10 is shown, whichis provided with the usual door 11. This door may be constructed with stiles 12 and Band with rails 1 1, 15 and 16, and is hinged to the cab 10 proper. Within the upper panelof door 11 is mounted my improved sash 17 which will now be explained in detail. I

As is best shown in Figs. 2, 3 and 41, sash 17 comprises sash members 18, 19, 20 and 21, which are rabbeted on both sides to receive a pair of window panes 22 and '23. These panes may be secured in place in the usual manner bv glaziers points and putty at 2 1 and 25, which produces a dead-air space 26 between the same. To strengthen the sash and to render it impossible for the panes to fall out in case of the putty and glaziers points giving way, I screw two 'perimetric sheet metal members 27 and 28 on the two sides of the sash proper, which overlap the panes and the putty at 24. and25.

The sash 17 is mounted in the door 11, as follows: Upon the centers of the facing portions of rails 14 and 15, are securely screwed bearing plates 29, and 30 which are provided with centrally disposed holes 31 and 32 in axial alinement. Uponcorresponding portions of the sash members 18 and 19 vare screwed similar plates 33 and 34 which are formed with protruding trnnnions 35 and 36 adapted to be journaled inthe holes 31 'and 32, ofplates 29 and 30. As before stated, the pivots of the sash are positioned in the center thereof. This permits the same to be freely swung or rotated in the door 11. so that it may be rotated to cause eitherside. that is, either of the panes 22 and 23 to face into the cab. I

In order to lock the sash in any position,

I provide the following described device: Plate 34, as clearly shown in Figs. 3 and 4, is made circular and extends beyond the edges of the window sash. A bracket 38 is secured to the rail 15 of door 11, and has mounted on it a handscrew 39 which is adapted to engage the under side of plate 34. hen this screw is tightened up against said plate, the same, and sash 17 which is connected to it, is deprived of motion, and thesash is held in any of its various positions. If desired, a lock-nut 40 may also be used to prevent loosening of the screw 39.

To present an abutting surface for the edges of the sash to hold the same in position in its frame when it is turned to either side, I provide a pair of slidable stop members 40 and 41. Each of the stops has connected upper end members 42 and 43 reaching out to the bearing plate and bottom wardl'y turned flanges 48 and 4,9 extendiing along the center of the stop" members and engageable by op osite sides of the sash members 21 and 20, all as clearly shown in Fig. 3. The stop members proper 40 and 41 have an extent between flanges 46 and 47 of sub stantially twice the thickness of sash members 20 and 21. A part of one stop member projects inside'and of the other stop member outside of the sash at all times, as indicated in Fig. 3, the window being held positioned by contact of sash members 20 and 21 with the stop flanges 48 and 49. In reversing th sash, it is rotated upon its trunnion bearings until the opposite sides of the sash members engage the opposite sides of center flanges 48 and 49, which engagement slides the stop members within the frame members 12 and 13 until the sash is positioned with its other side exposed, and with the stop members projecting outside and inside in the opposite direction from that shown in Fig. 3.

To effect an air or storm tight joint between the sash and the stiles 12 and 13 and the rails 14 and 15, I employ a flexible edging strip 37 which is secured to the edge of the sash, as is clearly shown in Figs. 3 and 4. When the sash engages the door-frame, this member exerts a pressure againstthe same and thereby effects an air-tight closure. If desired, a felt weather-strip or any other expedient may be used in place of the edging member shown.

The operation and use of the device is self evident. When the locomotive is traveling 1n a snowstorn and the window becomes covered with snow, the engineer merely loosens screw 39, gives the; window a half turn.

by pushing the sash in either direction, and then tightens the screws 39. This brings the snow-covered pane on the inside where it can be conveniently wiped or cleaned. The operation is repeated as often as the snow becomes so thick that vision through the pane is obscured;

The advantages of the invention are manifest. The device is exceedingly simple and efficient. In operation, practically no cold i permitted to enter the cab since thereversal of the window can be made very quickly. The use of the double panes also prevents the same from becoming frosted.

I claim:

1. In combination with a window frame and a sash mounted to swing about a vertical axis in said frame-,- flanged stop members slidably carried-by the frame-at each side of said axis and: extending outside of the frame on. opposite sides of the sash when in closed position a distance equal to the thickness of the frame, said step members having central flanges engageable by opposite sides of the sash on each side oftheaxis when the sash is in either of its closed. positions.

2. In combination with a window frame and a. sash having an exposed and an unexposed side, means for supporting the sash within the frame so that the exposure of the sides thereof may be reversed at will without removing the sash from the frame, stop members within the frame having per tions engageable by opposite faces of the sash frame in either of the positions of the sash frame, said engaged portions being movable by contact with the. sash frame to permit the sash always to come into the plane of thewindow frame, and" means associated with the stop members to terminate said IIlOVBl'HGllt when the sash isin the plane of the window frame in either of its positions.

In combination with a window frame and a sash supported therein to rotate or swing about a central axis, a pair of stop members extending about the sash between the sash frame and the window frame, said stop members being engageable by opposite faces of the sash frame 1n either of itsspositions and being constructed and arranged to move in opposite directions upon the reversal of the position of the sash frame, and means to limit the movement of the stop members in either direction so as to hold the sash member in the plane of the window frame in either of its positions.

4. In combination with a. window frame and a sash supported therein to. rotate or swing about a central axis, a pair of stop members extending about the sash between the sash frame and the window frame, said stop members being engag'eablebgy opposite faces of the sash frame in either of its posiing strip on the sash frame "for engaging a hens and being constructed and arranged to portion of the stop members to make an air- 10 move in opposite directions upon the retight closure therewith.

versal of the position of the sash frame, In testimony WhereofI aifix my signature. means to limit the movement of the stop GEORGE C. KERR. members in either direction so as to hold the Witnesses:

sash member in the plane of the Window W. F. WIELANI),

frame in either of its positions, and an eclg- CHAS. OTT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patente- Washington, D. G," 

